The periodic occurrence of forest fire is common in some places of Brazil. Mostly in places, that has a specified dry station, these fires can damage the forestry ecosystems, and their occurrence may affect the wild life and bring economic losses, as well in CO2 global emission. The aim of this study was define the fire season occurrence in Viçosa – Minas Gerais state Brazil, using five years data of fire and rainfall collected by the Fire Fighters. The study was made through the data from the firefighters from UFV, this data was evaluate for a period between 2010 and 2014, collecting the days and months that occurred fire in Viçosa city and outskirts, also the average precipitation data for the period. The observations showed that to Viçosa city, the occurrence of fire is mostly common in the July to October months, and August is the most susceptible month.